330 



Memoir Sears Foundation for Marine Research 



Figure 56. Carcharhinus falciformis, immature male, 848 mm. long, off Delaware Bay (U. S. Nat. Mus., 

 No. 35643). A Head from below, about Y2 natural size. B Second dorsal fin, about I x. C Dermal denticles, 

 about 36 X. D Apical view of dermal denticle, about 72 x. E Left-hand nostril, about 2.5 x. 



Figure 57. Carcharhinus jalcijormis, illustrated in Fig. 56. j4 Right-hand upper and lower teeth, about 

 2.5 X. B Fifth upper tooth. C Ninth upper tooth. D Second lower tooth. E Tenth lower tooth. B-E, about 

 7.5 X. 



